//! Schema analysis and cache library shared by `sntl-macros` and `sntl-cli`.
//!
//! Modules:
//! - [`config`]: parse `sentinel.toml` + env overrides.
//! - [`schema`]: typed model of `schema.toml` (tables, columns, enums, composites).
//! - [`cache`]: read/write `.sentinel/` directory.
//! - [`normalize`]: deterministic SQL normalization + hashing.
//! - [`parser`]: sqlparser-rs wrapper.
//! - [`scope`]: FROM/JOIN scope resolution and column origins.
//! - [`nullable`]: nullability inference engine.
//! - [`resolve`]: high-level orchestrator turning SQL into validated metadata.
//! - [`introspect`]: online-only helpers for talking to a live PostgreSQL.
//! - [`error`]: typed errors.
pub use ;